

HeroBounce is an email verification tool designed to identify whether an email address is valid, invalid, or risky. The service focuses on resolving catch-all domains and greylisted servers, which often represent a significant portion of B2B contact lists.
The tool is built for sales teams, marketing operations, and SaaS platforms that need to support their sender reputation. It supports browser-based access for bulk cleaning through CSV uploads and provides a REST API for real time validation in signup forms.
Users can verify lists to help reduce bounce rates and identify problematic addresses like spam traps. The service uses a multi-layer validation process that checks syntax, DNS, MX records, and SMTP servers.
Buyers should confirm if they require the greylist auto-retry feature, as it is only available on subscription plans and not on the Pay As You Go option.
Analyzes patterns and domain behavior to resolve catch-all emails that are often marked as unknown by other tools.
Automatically retries emails temporarily rejected by greylisted servers, which may help resolve these failures within 20 minutes.
Performs a sequence of checks including syntax, DNS, MX, SMTP, and AI analysis to determine email validity.
Supports uploading CSV, Excel, and TXT files for list cleaning, handling up to 10,000 emails per file.
Provides responses for real time validation in signup forms or CRM workflows, with SDKs for JavaScript, Python, and PHP.
Provides a confidence score for each email to help users make informed sending decisions.
Validating outbound sales lists to identify deliverable addresses and recover leads that other validators mark as unknown.
Integrating the API into a website signup flow to help prevent fake or mistyped email addresses from entering the system.
Scanning existing databases to remove invalid emails and spam traps to help reduce bounce rates.
Verifying customer emails at checkout to help ensure order confirmations and transactional messages reach the inbox.
Offers a free plan with 100 validations per month. Paid options include a Pay As You Go rate of $2.10 per 1,000 emails and monthly subscriptions starting at $17 per month for 10,000 validations.
Yes, there is a free plan that provides 100 basic email validations per month and does not require a credit card.
Subscriptions provide a monthly credit reset and include the greylist auto-retry feature. Pay As You Go credits are valid for 12 months but do not include the greylist retry system.
It uses AI and pattern analysis to resolve catch-all domains that are typically marked as unknown by other verification services.
Source category: Sales
Source subcategory: Email Verification
HeroBounce is an AI-powered email verification service designed for sales and marketing teams to help reduce bounce rates. It specifically focuses on resolving catch-all and greylisted emails. Buyers should note that the greylist auto-retry feature is restricted to subscription plans.